Brown stain type traditional Chinese medicinal material drying device and method based on accurate temperature and humidity control

Abstract

The invention discloses a drying device and method for browning traditional Chinese medicinal materials based on accurate temperature and humidity control. The drying device comprises a box body, an air energy heat pump device, a hot air circulating device, a humidifying and dehumidifying device and an automatic control device. A drying chamber is arranged in the box body, the air energy heat pump device provides heat energy for the hot air circulating device to heat air to form hot air, the hot air circulating device provides circulating hot air for the drying chamber to dry browning traditional Chinese medicinal materials, and the humidifying and dehumidifying device provides wet steam for the drying chamber to adjust humidity. And the automatic control device is used for controlling the air energy heat pump device, the hot air circulating device and the humidifying and dehumidifying device so as to dry the browning traditional Chinese medicinal materials. According to the drying device, the energy consumption and the cost can be reduced, the temperature and the humidity of the drying chamber can be accurately controlled, balance and stability of the temperature and the humidity are achieved, the stability and the uniformity in the processing process of browning traditional Chinese medicinal materials are guaranteed, and the quality of the browning traditional Chinese medicinal materials is improved.

Description

technical field [0001] The invention belongs to the technical field of Chinese medicinal materials processing, and in particular relates to a drying device and method for browning Chinese medicinal materials based on precise temperature and humidity control. Background technique [0002] After harvesting, fresh Chinese medicinal materials are not suitable for storage due to high moisture content and are prone to rot and deteriorate. Drying is an important method and means to solve this problem. Different types of Chinese medicinal materials need to adopt different drying methods due to their own material characteristics, so as to achieve the comprehensive optimization of the quality and drying efficiency of Chinese medicinal materials. The drying methods for the origin of Chinese medicinal materials stipulated in the "Chinese Pharmacopoeia" mainly include drying, drying, drying in the sun, drying in the shade, drying in the air, drying at low temperature, etc. During the dr...

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Problems solved by technology

The existing hot air drying equipment with temperature and humidity control has low humidification efficiency, and the humidity control stability and accuracy are insufficient

[0004] Due to the working principle and heating method of the existing heat pump drying equipment, the internal temperature and humidity will fluctuate greatly during the heat pump cycle, which will affect the drying stability and uniformity of browning Chinese medicinal materials.

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